Can-sealing machine.



1. c. BOWERS.

cm SEALING MACHINE.

APPLICATION FILED SEPT. 7. 1912.

Patented Apr. 20, 1915.

.7 y jj 4% a I Mm v 4 $5 aka J. C. BOWERS. CANSEALING MACHINE. APPLICATKONFILED SEPT. 1, I912.

Patented Apr. 20, 1915.

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CAN SEALING MACHINE- APPLICATION HLED SEPT. 1. 1912.

Patented Apr. 20, 1915.

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( iiinmllll'fil'in- IIIIIIIIII 1 -J. C. BOWERS.

CAN SEALING MACHINE.

APPLICATION FILED SEPT.T,1912.

B SHEETS-SHEET 4.

Patented Apr. 20, 1915.

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I. C. BOWERS. CAN SEALING MACHINEP APPLICATION FILED SEPT. 1. $912.

Patented Apr. 20,1915.

6 SHEETS-SHEET 5.

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J. c. Bowzns.

CAN SEALING MACHINE.

APPLICATION FILED SEPTJ. 1912.

Patented Apr. 20, 1915.

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Boston,

can-saunas Manama.

To all whom it may concern Be it known that I,

in thecounty of Suffolk and State of Massachusetts, a citizen of the United States, have invented new and useful Improvements in Can-Sealing Machines, of

' which the following is a specification.

whermetically sealed rece In sealing metal cans such a United States issued 1 No. 867,239, I havedescribed and shown a as sardine cans it is desirable to avoid the use of solder for various reasons and in Letters Patent of the tome October 1, 1907,

ptacle or can in which both the can and the cover have a the can and the wherein by the one operation and applied to the flanges. features of such a machine .are means for. automatically feeding,

being adapted to fit u on flange, the cover flanges being held toget er bf'a strip of metal bent into U shapean c amped upon the edges of the flanges.

My present The essential bending, and cutting the strip, and means for delivering it to the bent over to orm a shoulder,

sealing rolls and rolls to seal the can,

which may be rotated so for applying the strip the can held in au mechanism thecan; and when this is done, lf thepressnre is sufficient, the can will be erly sealed whether the cover flange is of t e exact form of the flange shown in the said Letters Patent, that is, with its edge or whether the cover flange is left fiat. In the present invention means are provided for performing these various operations and the several arrangements and parts will be understood by reference to the drawings. l

r I do not mean to limit myself to the arrangement hereinafter shown and described as the parts may be difi'erently arranged and power applied to, operate them in a;

different manner from that shown.

3. Fig. 6 is a section on line 6-6 of Fig. and Fig. 7 is: a detail showing the mechanism for clamping the can in place-and also invention relates to a machine a'strlp is bent Specification of Letters ratent.

JOHN G. Bowers, of

. for clamping the npp Joan c. Bownns, ornos'ron, iussacnusnrrs;

the sealing operation, all the sections except Fii 2 being very much enlarged.

y is a table, on which the various parts are supported, A% being a platform on the 7 table to receive tliecan holder against which the can is held under; pressure and upon which the can holder is noved.

otherwise I 1. .thatfthe strip'may be applied to the entire riphery' of I the table and pro lines 3- 3, Handy Fig. 2. Fig. 3 a detail of a portion of the mechanism ofFig...

.- :The strip feeding meshes with a on the shaft 0 .carries at its vmeshing with In the drawings z-Figure 1 is aplan of, a machine embodying my invention. Fig. 2-

. and cohperating grooved, the twat fitting together; as in the is a head for carrying the sealing mechanism. r, i K

B is a pulley connected byi neansjof a clutch B of any ordinary construction, with theshaft B Thisshaft B supported under the table in a suitable hanger or hearing (not shown). and carries ,a ypinion B? which meshes with a car Bg on the cam At the fart slip. bevel gears to, be described below. Y I 1 g andbendingmechanism comprises a guide 'wayC having aslot therein adapted to receive. a, flat strip of metal which may be'drawn from a co l or fed to the machine. I a

C}, C are feedin rolls. C is mounted on a shaft (1 whic passes down through carries at its lower end a bevel gear 0* meshing with a bevel'fgear' G on shaft B It also carriesla pinion C which pin-ion of corresponding size 7 on which roll "(3 isjmou'nted. D, I) are forming; rolls adapted to grip the strip andgive it a V-shapedbendLFor this purpose the roll D has: an j angular perip'hery (see Fig.2) and the roll D has a corresponding groove, ,gether andv the strip being fed between them, The roll D is mounted on a'shaft D which passes down through he table and lower end a. fbevelf gear, D? a corresponding gear D, on the shaft Bf- .rneslies with, a pinion I on xthe shaft D;c jn which roll D is mountedl Afurther forming operation is; given to the strip by rollsE, E ,.the roll?E havin a LsomewhatD-shapedperiphery (see Fig. 2% with the roll E which is case of the rolls 1), D and giving the final v Patented Apr. 20,1915. Application filed September 7, 1912. Serial m. 719,099. a

er sealing roll; during er end f the cam shaft B is a gearB in mesh with a pinion .B on theend of a, counter-shaft B and connected thereto. by a I clutch. The

shaft B carries various;

the two fitting tol It carries a pinion Diwhich of corresponding size F- and has a boss F t1me by means of a cam. Gon the shaft BE on-a shaft E carrying a pinion corresponding in size with the pinion E on the shaft E? which carries r011 E and which passes down through "the table and carries at its. 1

lower end a bevel gear E? meshin with a corres ending bevel gear E on t e shaft and is carried on whenever the shaft B is rotated.

Between the rolls and between. the rolls D, and E, B there is a guideway- F The ideway F is shaped to conform to the atness of the strip and'thls istrue also of the'guideway F The guideway F, however, is shaped'to conform to the'bend which has by that time been given the strip.- Beyond the rolls E, E there is also-a carriage F which has a guideway in it which conforms to the shape which has been given to the strip by the rolls E, E. A guideway F suitably shaped extends from the front of the carriage to a point close to the seal ng rolls. It should be narrower from the point f forward so as not to interfere with the movements of the can. The entrance to each one of these guideways flares slightly as shown in Fig. 1 to receive and guide the strip to the guideway itself, thus providing for any irregularity in the direction in which the end of the strip. is moving and the guideways. should be brought as close to the rolls as is practicable. v

The carriage F is mounted in a slideway on its under side which projects through a slot in the table of sufiicient length to allow itto have a suitable reciproca'ting movement. To this boss is attaohed'a cam rod F the lower end of which projects into a groove F in the cam F on shaft B. By this means the carriage is reciprocated the parts being properly proportioned to steady its movements.

To cut the strip into suitable lengths I have provided a knife or cutter G which is mounted to slide crosswise the strip in ways G The end of this knife is L-shaped as shown in Fig. 2 sothat it makes a tongue, that is, the end of the strip is slightly narrower than the'full width ofthe strip forming anarrow tongue which in the sealing operation overlaps the seal on the can as described in my said patent. This knife is given its crosswise movement at the proper This cam (see Fig. 4;) has a slightprojection or swell G lever G pivoted at Gr in a hanger G projecting from the under side of the table and connected at its upper end by the connecting rod G with the knife G. .At the proper moment the cam swell (it throws the'lever G which advances the knife G across the.

path of the strip, thuscutting the strip, the

he operation of these rolls is alike -tively forward to the sealing o caandn, D1 a.

, shaft B upon it which engages an angle time to release strip being suitably held for the purpose. The lever G is held against the cam by the spring G one end of which is attached to the lever and the other end to the under side of the table as shown.

I have also shown at H grippers which are mounted on the carriage F and grip the strip at the proper moment to feed it posirolls upon the These grippers movement of the carriage.

of the carriage are located one on each side F and project into the guideway in the car-' riage. They are constructed to yield slightly to any forward pull of the strip but as the carriage moves forward they grip the strip and pullit along as The mechanism heretofore described therefore feeds; bends longitudinally, and cuts oil a strip of metal of proper length to slightly more than surround the edge of the can which is to' be sealed and feeds it to the sealing rolls.

Theflsealing operation is performed by means of two rolls the peripheries of which are suitably shaped, the lower roll J having a flat periphery, the upper roll'J having a periphery of two diameters, the part j resting upon the strip during the sealing operation and the part 7' forming a stop or guide for the edge of the strip and running on the cover flange or otherwise according to whether the flange is flat or is shaped as in the carnage moves.

my said patent. To operate these rolls the which engages a corresponding bevel gear J mounted on the shaft J which carries at its outer end a gear J 5 which meshes with a gear J on the end of the shaft J which carries the lower roll J. In addition the shaft J carries a pinion J which meshes with a correspondingipinion J on the shaft J which carries the upper roll J The shaft J 7 is mounted in two fixed bearings J and J in' the head A". The shaft J must be allowed a certain very slight rocking motion in order that the roll J may be lifted slightly when it is to be placed upon the work. For this purpose the bearing J is pivoted by the pin ,orbolt J in its support and the bearingJ is capable of a slight movement in its, support.

In order to'hold theroll J down to its Work the bearing J f has mounted above it in the head A aslidefl-K to which ispivoted a toggle arm K which is pivoted to anangle lever Kforminga second toggle arm connected by a connecting rod K with-ea cam l ever,I

the farther end of which 'fis cam ;K.provided with a suitable cain groove gives the rod K and its angle lever K movements at the proper pressure from the. roll J and allow it to be lifted to allow a sealed can to be removed and anunsealcd can to ill.

carries at its end a bevel gear J cushion is of rubber or the like between the supported on the head A and adapted to be" lower end of the part K. and the bearing J for the shaft J and, as shown, such a cushion fits into a recess in the bottom of the in place by means of a frame 70 attachedto the part K. i 4

In order tohold the strip against the workI have shown a roll L mounted on a vertical pin L in an adjustable frame L set up against it by screws I or in any other desired way a ainst yielding cushions I so that the roll will-bear against the strip and hold it against the lateral edge or periphery of the flange of the box and cover to ibe sealed with a yielding pressure, so that if necessary the roll L may give slightly to conform-to any irregularities in the movement of the box .or can.

While other methods of holding the box or can'in placemay be used I have shown a method which is particularly eifective where the box is round although it answers with a boxhaving rounded corners such as a sardine box. a

The plate A. carriers'upon it a sliding bed or canholder M which is hollowed to receive the bottom of the can N. In cans of this class the cover is usually dished, the cover being shown in this case in Fig. 7 at a N the flange of the box being-lettered n and the flange of the cover being lettered a.

To hold; the cover in place during the sealing operation and also to serve as a guide to hold the various parts in place I have shown a form M which is recessed to reofthe cover and fits it closely.

ceive an antisfriction roll P. This form is of the same shape as the recess in the top The roll P is free to turn on the lower end of a rod P mounted in bearings P", P projecting from the head of the machine.

thisrod P is carried in the forked end of a lever P pivoted to the top of the head so I. t A. ,A cam roll carried by this lever runs in and carrying at its other end a connecting rod I which is connected to a cam'lever I pivoted to a hanger P under the table a suitablegroove in the cam P which cam is mounted on the shaft B, ,so that upon the rotation of the'shaft B, from time to time the rod P -is lifted so as to release the form.

In the operation of the machine as above described the parts are so proportioned and lever pivoted to the frame 1'. on the other arm R of this lever rests on The upper end of especially adapted for thdt'purpose, and comprising the form of slip clutch above referred to. .4

On the end of shaft B isv a cam R on which rests a roll on one arm R of a bent A roll r the clutch disk R splined to the shaft B. The clutch'disk R (see Fig. 3) has a quill 7' on which runs the pinion B. Washers r of leather or the like separate the pinion B from the disk R and also from the nut 1' which screws onto the .quill which is threaded for the purpose and holds, the parts together. This nut is set up sufliciently V tightly to cause the pinion B to turn the disk R and hence the shaft B under ordinary conditions, but if the disk is restrained in its rotation the pinion will continue to rotate without turning the disk or shaft.

It will be noted that in Fig. 3 the roll r rests in the recess 1' in, the disk R and it will hold the disk at rest until the swell on cam R lifts the arm R thus lifting the roll 1' out of the recessr and allowing the disk and shaft B to rotate with the pinion B".

The operation of the machine is'briefly as follows: A strip having been fed to the formers is shaped by them and when it has reached the extreme of the forward movement given to it by the feed rolls and forming rolls'it is cut oil? and thereafter is fed farther by the carriage to its position against the edge of the can and cover flanges, the can and cover having been put in position and under the roll J which at this moment is free to be lifted. When the roll J dro s and is held down by the straightening of t e toggle arms K, K the friction of the sealing rolls is suflicient to cause the movement of the can, the holder M sliding around on the plate A, the sealing operation taking lace at the same time. The recess in the form M corresponding as it does in shape with the flanges, the inner side of its upwardly projecting edge m serves with the roll P to guide the can in its passage so that the flanges and strip will always remain in proper relation to the sealing rolls J, J. The parts are timed so that the can will make slightly more than one revolution, say perhaps an inch, before the parts are released, this extra movement being sufiicient to entirely .surround the periphery of the flanger with the complete width of the strip, the tongue of the strip projecting somewhat beyond the point of complete sealing, this "construction being fully described in my patent above referred to.

The various cams are arranged to perform the necessary sequenceof operations,

the cam B being set to allovv rthe slip'clutch to engage'the shaft B and cause the feeding and sealing operations to take place simultaneously and the knife operates when ,the

l'B hgiyeproved-useful for accomplishing the 60 mg said work-holder, box and cover.

' and durin the pen rollsa apted to eratitons have stopped when the pressure on the can he der hasbeen released and the can is be removed, thepressurs on the pressure to 5 being released at the same moment. As the can holder is free to be moved by handat this moment, when the now can is the can holder may be slipped feeding and o bent to begin the sealing opera'tionusuall about the middle of one of the longv sides. I do not mean to limit my invention to the details 0f mechanism above described as in embodiments of my invention heretofore made *underjmy direction other mechanisms aims-pf one.

What claim as my invent on is: a t 1. A box sealin machine comprising arotatable work-hol er, a strip-feeding mechmm, a; strip-forming mechanism, and sealin'g rolls adapted to seal the strip upon the wora-- V "2. A bon-sealin machine comprising a rotable work-hol er, a strip-feeding mechani'sm, a strip forming mechanism, and sealing rolls adapted to seal the strip upon the work,- one of said rolls being mounted in a be"-' adapted to'be rocked, and means amiss; said, bearing. c a A box-soalin machine comprising a rotatable work-hol er, a strip-feeding mecha stri -formin'g mechanism, means for holdin t e strip straight during the feedin an forming operations, and sealing seal the strip upon the work. 4. A boxsealing machine comprising a ro- 'tatable work-holder, a strip-fecding mechanism, a strip-forming mechanism, sealing rolls adapted to seal the strip upon the work, and a guide adapted to hold the strip against the work during the sealing operation.

5. A box-scaling machine comprising a rotatable work-holder, a strip-feeding mechanism, a strip-forming mechanism, a stripattaching mechanism, and means for cutting the strip.

6. A box-sealing machine comprising a ro atable work-holder, astrip-feeding mechanism, a strip-forming mechanism, a stripattaching mechanism, and a cutting mechanism located to cut the strip between the strip-feeding mechanism and the stripforming mechanism.

7. In a box scaling machine, a work-holder comprising two members adapted to clamp a box and its cover between them, means for forming a strip and means for simultane ously sealing a strip upon the edge of said box and cover in said work-holder and rotat- 8. In a box-sealing machine, awork-holdcr comprising two members adapted to clamp. a boxand its cover between them, and means for automatically separating the members of v comprising der said sealin movement, and strip from the on each shaft and adapted to clamp the u per and under sides of said strip against t e work, to seal the cover and box.

9. In a box-sealing machine, a work-holder two members adapted to clamp a box and its combination with sealing ro adapted to apply a sealing strip to the flanges of the and rotate the work, and means for work releasing said sealing rolls coincidentally with the separation of the members of the work-holder.

10. In a box-sealing rolls, a work-holder comprism hers and means adapted to hol two mema strlp unduringthe scaling operation, and means for separating the membersofjsaid work-holder,

to clamlp the work, inv

rolls and against the work cover between them, and means, for automatically separating the members of machi le, two sealing adapted to apply a sealing strip to said Work and means for fee'din a sealing strip thereto comprising feed rol s, formin rolls and means for givlng said feeding an forming rolls an intermittent movement, and guides located to guidethe strip from said orming rolls to thework, as described.

12. In abox-sealing machine, sealing rolls and means for feeding a sealin strip thereto comprising feed rolls, forming rolls and means for giving them an intermittent guides located to guide said forming rolls to the work,

one of said guides having areciproca'ting. motion and means whereby it 1s reciprocated.

13. In a box-sealing machine, sealing rolls and means for rotating them, and a stripfeeding and forming mechanism adapted to feed a sealing strip to said sealing rolls,

- a rotatable Work-holder adapted to feed the work between said sealing rolls, one of said sealing rollshaving a flat periphery and the other roll having a periphery of two diamv stars, as and for the purposes set forth. 7

14:. A machine'for closing cans, comprising holding means constructed and arranged to grasp a can with its cover in place, such a strip feed comprising, a plurality of pairs of rolls can and cover having outwardly projecting flanges lying closely together,

the flanges of the can, and a sealing means arranged to bear on opposite sides of the flanges and means for giving said sealing means, a positive motion whereby said can.

and said stri will be fed simultaneously and said strip will be bentaround said can and its edge portions caused to embrace .the flanges throughoutltheir entire length.

upon flanges extending in c ose propinquity from the body and cover of a can, including a holder for the can, strip-placingmechamsm including members arranged with respect to said holder to embrace the flanges and a strip and havin a part to bear "on that part of the strip whic passes over the edges of the flanges, and means for feeding a strip bent longitudinally into U-form upon the flanges and between said members at the same time. a y

16. A machine for hermetically sea-l ng cans, boxes and the like having overlapping flanges comprising a rotatable hold for supporting a can of this character, means for folding a strip into U-form meross-section, and placing said strip so that its edges may embrace the flanges of the can, squeezing mechanism for exerting a rolling pressure on the strip upon the opposite sides of-' said flanges, and causing the pressure of said squeezingmechanism to be applied at all points throughout the extent of the flanges. 17. A machine for hermetically sealing cans, boxes and the like having overlapping flanges comprising means for feeding into the-machine a flat strip, means for bending such strip into U-form in cross section, severing means constructed to cut off a length of the stri having a projecting tongue and arrange so that the length thus severed inay be suflicient to encompass the can and overlap at the ends, a rotatable holder for the can, and clamping means for pressing 'the edges of the strip against the opposite faces of the flanges of the can throughout the entire extent thereof.

18. A machine for hermetically sealing by mechanical means acan having adjacent flanges on its body and the periphery of its cover, comprising a holder for the article to be-sealed, strip feeding and folding means constructed to bend a strip about a longitudinal line and place such strip with its sides embracing the flanges of the can, stripa setting means for placing said strip upon the can and cover flanges, and means for giving said setting means and can holder relative movements such as to bend-the strip around the periphery of the flanges and cause it to embrace the latter throughout their entire extent.

'19. A machinefor hermetically sealing by pro ecting edges of a can bod section.

tudinal line and place suc strip with its sides embracing the flanges of the can, stripsctting means for clamping s-id strip upon the can flanges, means for mparting relative movement to said setting means and retatable holder constructed and arranged to 15. A machine for placin a sealing strlp continue such relative movement through more than the entire circuit of the can to cause the clamping pressure of the setting means to be applied to all parts of the can flanges and strip throu hout more than the entire extent of the anges, whereby an overlapping end of the strip may be set.

20. A machine for hermetically sealing by m chanical means a can having adjacent afiges on its body and cover, comprising a rot:- ible holder for the article to be sealed, a strip-feeding and folding means constructed to bend a strip transversely about a longitudinal line and place such strip with its sides embracing the flanges of the can, strip-setting means for clamping said strip upon the can flanges, vsaid strip setting mechanism being adapted to give said rotatable holder a rotary movement greater than its peripheral lengxth whereby to set an overliipping end of t e strip. 1

21. organized autcmatic machine for applying a sealing strip tothe overlapping g and cover, comprising a rotatable can ho der, feeding mechanism arranged to advance and 'de a strip, folded longitudinally in U- orm, until its forward end is braces said edges, a pair of cofiperating pressure members arranged to bear on the opposite sides of the strip when so laced, means for releasing said members w ereby the strip and edges may be placed between them, and thereafter forcing the members together to grip the strip and edges with a placed on and emsevere and yielding pressure, and ,means,

for rotating said pressure members whereby said can and cover will be rotated and the entire extent of the stri and edges will acted upon by said mem ers.

22. In a can sealing machine, iii-combine.

tion with a rotatable holder for the cans to be sealed and clamping means for securing a sealing'strlp about said cans, mechanism or forming a sealing strlp comprising a series of rolls constructed to feed a strip in the form of flat ribbon or tape and form a longitudinal indentation approximately in the centerthereo'f, said rolls being arranged to feed the strip toward the can, and also formed so as rogressively to deepen the indentatiqn an draw the sides of strip nearer togethen'giving the strip a U-form in crossnearer together into U-form in cross-section,

and means for feeding the strip to the can.

24:. In a can sealing machine, in comblnation With a holder for the cans to be sealed 7 and clamping means for securing a sealing strip about said cans, mechanism for formmg a sealing strip comprising a series of benders constructed to form a longitudinal groove or indentation between the edges of a strip and to progressively deepen such indentation and bend the sides further toward one another until such sides on each side of the bend. are approximately parallel, and bring the sides ,of the strip nearer together, said benders being located in such position that a strip delivered therefrom is fed to the clamping means into position to embrace by I its edges the sealing flanges of the can.

25. In a can sealing machine, in combination with a rotatable holder for the cans to be sealed and means forvplacing a sealing strip upon adjacent flanges of the body and cover of the can and for bending the strip around the periphery of such flanges, mechanism for forming a sealing'strip and delivering such strip to said means comprising a series of complemental bending and feeding rolls arranged in series with the lastrolls of the series arranged adjacent to said means, the first rolls of said series conslstlng of a roll having an approximately V-shaped,

rib and alcomplemental roll having a correspondingly shaped groove, and the subsequent rolls having a cooperating U-shaped rib and groove, whereby a flat strip is pro gressivelyfoldedinto Uv-shape in crossfsec= tion.

a 26. A machine for hermetically sealing cans, boxes, and the like, having overlap,- ping flanges comprising means for feeding,

into the machine a flat strip, means for bending such strip about its longitudinal center into U-form in'c ross-section, severing means constructed to cut off a length of the strip having a projecting tongue and arranged so that' the length thus severed may be 'suflicient to encompass the can and overlap at the ends, a holder for the'can and clamping means for pressing the edges of the strip against the opposite faces of the flanges of the can throughout the entire extent thereof.

27. A machine for hermetically sealing by mechanical means a can having adjacent flanges on its body and. the periphery of its cover, comprising a holder for the article to be sealed, strip feeding and folding means constructed to bend a strip about its longitudinal center and place such strip With its sides embracing the flangesof the can, stripsetting means for placing said strip upon the can and cover flanges, and means for giving said setting means and can holder relative movements such as to bend the strip around the periphery. of the flanges and cause it to embrace the latter throughout their entire extent. a

28. A machine for hermetically sealing by mechanical means a can'having adjacent flanges on its body and cover, comprising a holder for the article to be sealed, stripfeeding and folding means constructed to bend a'strip transversely about its longitudinal center and place such strip with its sides embracing the flanges of the can, stripsetting means for clamping said strip upon the can flanges, feeding means for imparting relative movements to said setting means and holder, constructed and arranged to continue such relative movement through more than a the entire circuit of the can, whereby to cause the clamping pressure of the setting-means tobe applied to all parts of the can flanges and strip throughout more than the entire extent of the flanges, whereby an overlapping end of the strip may be set.

' 29. A machine for attaching the cover to a can having adjacent flanges on its body and cover, by means of a lengthwise-doubled sealing strip comprising a holder for the article to be sealed, strip-feeding and folding means constructed to bend a strip transversely about its longitudinal center and place such strip with its sides embracing the flanges .of the can, strip-setting means for progressively applying said strip upon the can flanges, including provisions for causing said applying means to exert a yielding uniform pressure and permitting the same to accommodate irregularities in thickness of the strip and flanges, and means for giving said setting means and can holder relative movements such as to apply the clamping can flanges.

tion With a holder for the jeans to be sealed 'pressure'throughout vthe entire extent of the and clamping means for securing a sealing strip about-said cans, mechanism for forming a sealing strip and for feeding the strip to the clamping means comprising a series of benders constructed to form a longitudinal groove or vindentation between-the edges of a strip and to progressively deepen such indentation and bring the sides of the strip nearer together into U-form in cross-section.

31. A machine for hermetically sealing cans, boxes and the like having'overlapping flanges comprising a holder for su orting a can of this character, means for E) ding a strip about its longitudinal center into U- squeezingmechanism to be applied at all form in crosssection, and placing said strip V points throughout the extent of the flanges. so that its edges may embrace the flanges of the can, squeezing mechanism for exerting JOHN C. BOVVERS. 5 a rolling pressure on the strip upon the op- Witnesses: V

posite side's of said flanges, and feeding GEORGE O. G. COALE,

mechanism for causing the pressure of said p M. E. FLAI-IERTY.

copies of this-patent may be obtained for five cents each, by addressing the Commissioner of l'atents, Washington, I). O. 

